Silicone roj hmab hais txog cov roj hmab uas nws cov saw tseem ceeb yog tsim los ntawm kev sib hloov ntawm silicon thiab oxygen atoms, thiab ob pawg organic feem ntau txuas nrog silicon atom. Ordinary silicone roj hmab yog tsim los ntawm silicone chain units uas muaj methyl pawg thiab ib tug me me ntawm vinyl pawg. Kev taw qhia ntawm phenyl tuaj yeem txhim kho qhov kub thiab tsis kub tsis kam ntawm silicone roj hmab, thiab kev taw qhia ntawm trifluoropropyl thiab cyano pawg tuaj yeem txhim kho qhov kub thiab txias ntawm silicone roj hmab. Silicone roj hmab muaj qhov kub thiab txias tsis kam thiab feem ntau tseem tuaj yeem ua haujlwm ntawm -55 degree . Tom qab kev qhia txog phenyl, nws tuaj yeem ncav cuag -73 degree . Lub tshav kub tsis kam ntawm silicone roj hmab kuj zoo heev. Nws tuaj yeem ua haujlwm ntev ntawm 180 degree, thiab tuaj yeem tiv taus ob peb lub lis piam lossis ntev dua txawm tias nws siab dua 200 degree me ntsis. Nws tuaj yeem tiv taus qhov kub siab tshaj 300 degree instantaneously. Silicone roj hmab muaj huab cua zoo permeability thiab oxygen kis tau tus nqi yog siab tshaj ntawm cov hluavtaws polymers. Tsis tas li ntawd, silicone roj hmab muaj cov khoom zoo ntawm kev ua lub cev tsis muaj zog thiab tsis ua rau coagulation, yog li nws tau siv dav hauv kev kho mob. [1]
Silicone roj hmab muab faib ua thermal vulcanization hom (siab kub vulcanization silica gel HTV) thiab chav kub vulcanization hom (RTV). Ntawm lawv, chav tsev kub vulcanization hom tau muab faib ua hom tshuaj tiv thaiv polycondensation thiab hom tshuaj tiv thaiv ntxiv. Kub kub silicone roj hmab yog siv los tsim ntau yam khoom siv roj hmab silicone, thaum chav tsev kub silicone roj hmab yog siv los ua cov nplaum, cov khoom siv potting lossis pwm. Cov thermal vulcanization hom muaj qhov loj tshaj plaws, thiab cov thermal vulcanization hom tau muab faib ua methyl silicone roj hmab (MQ), methyl vinyl silicone roj hmab (VMQ, qhov loj tshaj plaws thiab cov khoom lag luam hom), thiab methyl vinyl phenyl silicone roj hmab PVMQ (tsis kub tsis kam. , radiation kuj). ), thiab lwm yam xws li qhov muag silicone roj hmab, fluorosilicone roj hmab, thiab lwm yam.
